Frequencies for first 10,000 rows of veh_cf1 variable in vehicle dataset :

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,991       89.91       89.91
          1 |        151        1.51       91.42
          2 |         80        0.80       92.22
          3 |         10        0.10       92.32
          4 |          8        0.08       92.40
          5 |         13        0.13       92.53
          6 |          2        0.02       92.55
          7 |         14        0.14       92.69
          8 |          1        0.01       92.70
          9 |          8        0.08       92.78
         11 |          1        0.01       92.79
         12 |          1        0.01       92.80
         13 |          1        0.01       92.81
         14 |          1        0.01       92.82
         15 |          5        0.05       92.87
         16 |          8        0.08       92.95
         17 |          1        0.01       92.96
         18 |         19        0.19       93.15
         31 |        404        4.04       97.19
         32 |          8        0.08       97.27
         99 |        273        2.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016